Plastic coating material



UNITED STATES PATENT OFFICE.

JAMIE; GAB-BEL DOBBINS, OF ROCK HILL, SOUTH CAROLINA.

PLASTIC COATING MATERIAL.

1T0 Drawing.

To all whom it may concern:

Be it known that I JAMES CARREL Don- BINS, a citizen of the IInited States of America, residi at Rock Hill, in the county of York and tate of South Carolina have invented certain new and useful Improvements in Plastic Coatin Material, of which the following is a speci cation.

My present invention relates to a material for use in plastic coating procexes, and more particularly to a material ada ted for use on fabrics, walls, etc., for fi ing, stiffening and giving a finished appearance to plaster, cement, clay or other mineral surfaced walls.

The primary object of the invention is the provision of a coating or composition for this purpose, which is water proof, and may be applied to a wall with facility and despatch and is then ready and in prime condition to be stippled in order to give to the wall or surface the appearance of sand paper, or other analogous material.

The invention consists essentially in' mixing certain ingredients into a paste formation or condition, which may be applied to a wall with a brush or broom, and then stippled before drying.

In the followin specification I have illus- I trated one examp e of the physical embodiment of my invention mixed according to the best mode I have so far devised for the practical application of the principles of mg invention.

11 carrying out the process to produce my.

improved composition I utilize various powdered ingredients which after being mixed together, are then mixe with a liquid redient.

he powdered i1%redients have for their base pure ordinary ortland cement or white cement, to which is added hydrated lime, ground mica, and a mineral color to give the desired shade.

I find that the following formula for the Specification of Letters Patent.

'mixed or commingled into a homo Patented Oct. 12, 1920.

Application med October 29, 1919. Serial no. $34,215.

8 quarts of an aqueous solution of sodium the powdered ingredients the entire mass is stirred continuously, until the entire quantity has been mixed to the consistency of paste when it is ready for applicationto the wall, canvas, or other surface that-is to be In applying the paste to a cement, plaster, clay or other mineral surface, it is preferred to use a broom or brush, such as for instance a whisk-broom. The whisk-broom ma be dipped into a bucket of the paste an then slapped broadside against the surface to be coated and this slapping process is repeated until ap roximaitely four or five square feet of surface have been covered with the paste while it is in rather more than a plastic condition. The surface which has thus been coated isnow stippled or hammered with the brush, using refer-ably a brush of the nature of the onfiua' hing brush, and appl bristles to the aste. t at has been laid on the surface. e effect of this stip ling is to produce a. uniform, but rough or ry scrubthe ends of the.

coating on the surface being covered, the appearance of the wall being somewhat slmilar to that of sand paper, or a smooth troweled surface may be effected where desired, and in some instances the efl'ect of artificial marble may be produced, and it will be found that the coating is Waterproof so that it may be washed when required, and resents a plain but ornamental and 10 pleasing efi'ect to the eye.

Claims 1. A coating material of paste form, containing cement, hydrated lime, mineral color, ground mica, water and sodium silicate.

2. A coating paste, comprising approximately 100 pounds of Portland cement, 13 pounds hydrated lime, 1 pound mineral color, 5 ounces ground material in the nature of a.

mica, 8 quarts of water and 8 quarts of 20 a ueous solution of sodium silicate.

n testlmony whereof I afiix my signature.

JAMES OARREL DOBBINS. 

